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Find vortices in velocity fields

version (189 KB) by Sebastian Endrikat
The code will return the location and size of vortices found in velocity fields of two components.


Updated 21 Jan 2016

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A vortex around the z axis can be detected in the x and y component of the velocity field.
Based on the paper
Combining PIV, POD and vortex identification algorithms for the study of unsteady turbulent swirling flows
Laurent Graftieaux, Marc Michard and Nathalie Grosjean
Ecole Centrale de Lyon
Returns the location (x,y), area and circulation of every vortex found.

Cite As

Sebastian Endrikat (2020). Find vortices in velocity fields (, MATLAB Central File Exchange. Retrieved .

Comments and Ratings (10)

This is just beautiful. I ended up improving your code to dramatically reduce processing time, as I had thousands of vortex images to track in time. If anyone is interested:

This is just beautiful.

Hi Sabastian,
Do you have any tutorial to work with this program? I appreciate you if you can prepare a tutorial on youtube or anywhere.


Samrat Sur


thank you


Quick mode added, bug fixes

Small improvements made.

Added calculation of circulation.

MATLAB Release Compatibility
Created with R2015a
Compatible with any release
Platform Compatibility
Windows macOS Linux